Victoria Best told WFAA-TV she was driving on Interstate 35 to her workplace in Dallas on Friday when the auto in front of her started repeatedly braking.
It was when she reported the incident to police and they asked her to try and read the license place of the auto that she spotted the driver holding his weapon in the air.
A driver is seen pointing a gun in this still image of a phone video belonging to another driver, Victoria Best, in Dallas. "That was what made me pick up my phone and start recording". He said that's why he pulled out his gun.
She said she didn't look at the driver as she passed him.
"It was really the look on his face that scared me the most", Best told KXAS. "I could have died".
On Monday afternoon, Sida turned himself in for questioning by Lancaster police, telling officers that he pointed the gun at Best because she had an unknown object in her hand - presumably her cellphone - that he believed might be a gun.
Police have not decided whether or not any charges will be filed.
Texas criminal statute defines deadly conduct as a "person who recklessly engages in conduct that places another in imminent danger of serious bodily injury".